[VOL-3797] : Set default g++ and gcc version to 4.9 in openolt-test docker image

Change-Id: Ic49a10dcd62fd22957be999ee7b2e6fbfe5f1662
diff --git a/VERSION b/VERSION
index 7ec1d6d..3e3c2f1 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-2.1.0
+2.1.1